As a primary school Chinese teacher, Xie Yichen did nothing. He didn't plug in sockets, wasn't hit by a car, didn't step on dog poop, didn't choke on food, didn't choke on drinks, didn't stumble when going out, and didn't have a brain. Why should he time travel?! Just wear what you wear, at least give me a reason! Another sixteen-year-old student suddenly arrived at Qingjun Academy - Gu Xisu. Xie Yichen: You are so smart, why do you still come to learn? Just come and don't make trouble in class, okay? ! Things are unpredictable. Not long after such a "calm" day, new changes ushered in...